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【教学课件】沪科版数学九年级上册

  • 2026-04-09 00:37:13
【教学课件】沪科版数学九年级上册
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 22.1二次函数 21.2.1二次函数y=ax²的图象和性质 22.2.1二次函数y=ax²的图象和性质 21.2.2二次函数y=ax²+bx+c的图象和性质 21.3二次函数与一元二次方程 21.4二次函数的应用 21.5反比例函数 21.6综合实践 获取最大利润 22.1.1比例线段 22.1.2平行线分线段成比例 22.2相似三角形的判定 22.3相似三角形的性质 22.4图形的位似变换 22.5综合实践 测量与误差 23.1.1锐角的三角函数 23.1.2 30°,45°,60°角的三角函数值 23.1.3一般锐角的三角函数值 23.2解直角三角形及其应用

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  1. CONNECT:[ UseTime:0.000694s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000778s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000331s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000257s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000624s ]
  6. SELECT * FROM `set` [ RunTime:0.000244s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000633s ]
  8. SELECT * FROM `article` WHERE `id` = 459218 LIMIT 1 [ RunTime:0.000399s ]
  9. UPDATE `article` SET `lasttime` = 1777327198 WHERE `id` = 459218 [ RunTime:0.002695s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000237s ]
  11. SELECT * FROM `article` WHERE `id` < 459218 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000443s ]
  12. SELECT * FROM `article` WHERE `id` > 459218 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001364s ]
  13. SELECT * FROM `article` WHERE `id` < 459218 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001022s ]
  14. SELECT * FROM `article` WHERE `id` < 459218 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000691s ]
  15. SELECT * FROM `article` WHERE `id` < 459218 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001067s ]
0.079538s